10 Questions
What is the main reason for the increase in cardiac output during exercise?
Increase in stroke volume due to sympathetic stimulation
What contributes to the cardiac acceleration during exercise?
Corticohypothalamic discharge and positive chronotropic effect of sympathetic discharge
How does muscular exercise affect venous return?
The contraction of skeletal muscles and increased activity of respiratory muscles
What contributes to the increased stroke volume during severe exercise?
Increased contraction due to a greater end diastolic volume
What effect does sympathetic activity have on the venous system during exercise?
Increased sympathetic activity on the venous system
What contributes to the increased stroke volume during severe exercise?
Decrease of the end systolic volume due to sympathetic stimulation
What contributes to the cardiac acceleration during exercise?
Corticohypothalamic discharge
What contributes to the increase in venous return during muscular exercise?
Contraction of the skeletal muscle squeezes the blood towards the heart
What effect does the increase in body temperature have on cardiac acceleration during exercise?
It evokes the Bainbridge reflex
What effect does increased sympathetic activity have on the venous system during exercise?
It increases venous return
Test your knowledge of the physiology of exercise with this quiz on the effect of muscular exercise on circulation, specifically focusing on the increase in cardiac output and stroke volume during severe exercise.
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